<table width="100%">
    <tr>
        <td align="right" cols="2">
            <{t}>原始总额:<{/t}><{$aCart.subtotal}><br>
            <{t}>优惠金额:<{/t}><{$aCart.discount_amount}><br />
            <{t}>总额:<{/t}><{($aCart.subtotal - $aCart.discount_amount)}>
        </td>
    </tr>
</table>